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A 30kg box is let go on a ramp that is inclined at an angle of...

A 30kg box is let go on a ramp that is inclined at an angle of 30 degrees from the horizontal plane.If the friction coefficient is 0.5, how much work has been performed by this frictional force over a distance of 34 m as the box slides down the ramp. What is the acceleration of the box along the surface?

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